Checking The Generator Idle Operation; Checking The Alternator Continuity; Checking The Ignition Coil; Checking The Pick-Up Sensor - APRILIA QUASAR 125 2003 Workshop Manual

QUASAR 125-180
5.5

CHECKING THE GENERATOR IDLE OPERATION

"
Disconnect regulator cables connector.
"
Start engine and reach 3000 rpm, with the gear in neutral.
"
Using a portable tester, measure voltage along the cables (alternate current
a.c.).
Standard idle voltage: above the values specified in the diagram.
5.6

CHECKING THE ALTERNATOR CONTINUITY

With the engine off:
"
Disconnect the regulator cables connector.
"
Using a portable tester, check the continuity between stator cables.
"
Check also stator mount isolation.
R1, R2, R3 resistance standard value: 0.1-1
Resistance between stator cables and mount standard value:
5.7

CHECKING THE IGNITION COIL

"
Carry out this test with a portable tester. Check primary and secondary
windings continuity. The reading, expressed in ohm, shall not be perfect but,
if the windings are not damaged, the following ohm resistance values shall
be measured.
Coil winding resistance
Primary
Secondary
Disconnect spark plug cap before any reading.
5.7.1

CHECKING THE PICK-UP SENSOR

"
Disconnect the pick-up sensor connector.
"
Using a portable tester (1000 ohm range), measure the resistance between
the blue/green and blue/white terminals resistance between 148 ohm ± 10%
(at 20 °C).
"
If the resistance value is infinite or below the recommended value, change
the pick-up sensor.
Release 00/2003 - 09
Ω
0.2 ohm ± 10%
3 Kohm ± 10%
30 V
R1
∞
0,7Ω
ELECTRIC SYSTEM
8 V
G Bi
40 V
V
R2
0,5Ω
G Bi
R3
0,8Ω
V
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